Example Script - Power Cycling On Pattern Match; Example Script - Multiple Email Notifications On Each Alert - Tripp Lite B092-016 Owner's Manual

Chapter 15: Advanced Configuration

15.1.3 Example script - Power cycling on pattern match

If for example we had an RPC (PDU) connected to port 1 on a Console Server and also have some telecommunications device
connected to port 2 and which is powered by the RPC outlet 3. Now assume the telecom device transmits a character stream
"EMERGENCY" out on its serial console port every time that it encounters some specific error, and the only way to fix this error
is to power cycle the telecom device.
The first step is to setup a pattern-match alert on port 2 to check for the pattern "EMERGENCY".
Next we need to create a custom script to deal with this alert:
# cd /
# mkdir /etc/config/scripts (if the directory does not already exist)
# cp /etc/scripts/portmanager-pattern-alert /etc/config/scripts/portmanager-pattern-alert
Note: Make sure to remove the if statement (which checks for a custom script) from the new script, in order to prevent an
infinite loop.
The pmpower utility is used to send power commands to RPC device in order to power cycle our telecom device:
# pmpower -l port01 -o 3 cycle (The RPC is on serial port 1. The telecom device is powered by RPC outlet 3)
We can now append this command to our custom script. This will guarantee that our telecom device will be power cycled every
time the console reads the "EMERGENCY" character stream on port 2.

15.1.4 Example script - Multiple email notifications on each alert

If you desire to send more than one email when an alert triggers, you have to create a replacement script using the method
described above and add the appropriate lines to your new script.
Currently, there is a script /etc/scripts/alert-email which gets run from within all the alert scripts (e.g. portmanager-user-alert or
environmental-alert). The alert-email script is responsible for sending the email. The line which invokes the email script looks
as follows:
/bin/sh /etc/scripts/alert-email $suffix &
If you wish to send another email to a single address or the same email to many recipients, edit the custom script
appropriately. You can follow the examples in any of the seven alert scripts listed above. In particular let's consider the
portmanager-user-alert script. If you need to send the same alert email to more than one email address, find the lines in the
script responsible for invoking the alert-email script, then add the following lines below the existing lines:
export TOADDR="emailaddress@domain.com"
/bin/sh /etc/scripts/alert-email $suffix &
These two lines assign a new email address to TOADDR and invoke the alert-email script in the background.
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